Fixed partial dentures, is divided into, retention, bridge and connect the body composed of three parts. The fixed bridge is formed through the retainer and abutment luting function as a whole; bridge sub-recoverable form and function of the missing teeth, and abutments can be dental instruments called abutment teeth after the bridge base. Natural teeth to support fixed bridges, root or abutment; abutment teeth in addition to withstand the resultant force of its own resultant force but also an additional commitment to the bridge. Retention refers to the production of sticky solid crowns on the abutments, piles the crown part of the crown inlay fixed-wing bridge with the retention of and connected to the abutments and to obtain the retention. Bridge the artificial tooth is part of the fixed bridge to Dental caries can lead to pneumonia restore form and function of the missing teeth. The connection body is part of the connection between the fixed bridge retainers, the connection can be divided into active connection to the body and the fixed connection.
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